Blisters When You Walk Higher Miles. Walking 10 miles (over 3 hours), even if you are used to walking for six miles, is more of a challenge. You can do it, but most people are likely to develop blisters in new places. Shoes and gear that worked fine for two hours may not be ideal for four hours.
How the Aurora Borealis occur. The Northern Lights are caused by the interaction of the solar wind - a stream of charged particles escaping the Sun - and our planet's magnetic field and atmosphere.
The Northern Lights are NOT seasonal, and can occur at any time of the year, and are pretty much unpredictable, UNLESS you know someone who watches the sun. like an astrophysicist. SOMETIME they can tell when the sun is going to erupt, and possibly predict northern lights.